Mold.



Nanvzgsn y PATBNTED-oojis, '1904.

` "0."N. L. BRUDEWOLDM. M. woon.

MOLD'.

NO MODEL..

UNITED STATES v lraam/Gea octobef 1s, 1904.

PATENT OFFICE.

OHIO.

MOLD. n f

SPECIFICATION forming part of Letters Patent No. 772,497, dated October 18, 1904.

` Application ned June 23,1904. serial No. 21am. (No model.)

To aLl/Z whom t may concern:

Be it known that we, CHARLES N. L. BRUDE- WOLD and JOSEPH M. WOOD, citizens of the United States, residing at Cambridge, in the county of Guernsey and VState of Ohio, have use" the same.

`Our invention relates to improvements in glass-molds of that type in which a globe or other lhollow article is blown or otherwise made.

The object of our inventionis to provide a simple and eiiicientmeans wherebyglass globes and chimneys which have series of holes around their lower portions may be blown in the common Jform of mold known among glassworkers as open and shut iron molds.

With this and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure lis a top plan View, with parts in section, of our glassfmold, the same being in its closed position; and Fig. 2 is an elevation of the mold in its open position.

Referring to the drawings by numerals, 1 and 2 denote two mold-sections which are pivotally connected together, as at 3. These mold-sections may be of any suitable form, constructiom or material and may be connected in any desired manner; but, as illustrated, each is in'the form of a half-cylinder and has upon its inner face a depression or cavity 4 of any shape or configuration. When the moldfsections 1- and 2 are in their closed position, said depressions 4 form a cavity in which the glass globe or chimneyis blown. 'Ihe glass globe or chimney which is designed to be made in said .mold is of that type designed to be used upon vapor or gas lampsy in which a mantle is employed-such, for instance, as Welsbach lights. The air-holes around the bottomv or lower portion of such globes `or chimneys are formed by blowing .the latter with projecting portions known as able point; but, as shown in Fig. 2 of the drawings, they aren disposed adjacent to its upper end and consist of circular depressions 5, formed inthe inner face of the mold. Said j depressions extend radially from the center -of the mold, and hence the blow-overs will also project radial-ly. In order to permit the mold to be swung/open after the chimney or other article has beenr formed, Ywe provide each of the sectionsl and 2 with a removable portion or mold-section6, which is that part of the mold around said blow-overs. By makingthe mold-sections 6 removable it will be seen that they may be movedA radially outwardv away 'from the molded article in order to free or clear the blow-over projections upon the said article. Said globe-sections 6 may be made of any suitable size, form, or material; but, as shown, they are in the form of segmental blocks 7, which areadapted to lit snugly in similar shaped openings 8, formed in the mold-sections 1 and 2. Any suitable means may be provided for moving the sections 6 into and out of the openings 8 to close or open the same. As shown in Fig. 2, we have secured by screws 9 upon,theouter side of each mold-section an arc-shaped bracket 10, which is spaced from said mold and formed adjacent to its center with a slot 11. Pivoted, as at 12, upon a stud 13, formed upon one end of thel bracket 10, is a curved handlever 14, the free end of which is formed with a handle 15. Said Alever 14 is connected with the block 7 by a stem or bolt 16, which projects through and is guided in said slot 11 in the bracket 10. The inner end'of said bolt 16 is screwed into the mold-section 6, as at 17, and the outer screw-threaded end 18 of said bolt projects through an opening formed in the lever 14 and is provided with two nuts 19 and 20, between which Ithe lever 14 is so disposed that said bolt has a slight lateral nievement.

The operation of the mold will be readily seen. When the mold is in its closed position, as shown in Fig. 1, and both of the removable mold-sections 6 are in closed positionin the openings 8, the glass globe or chimney is blown in the cavity 4 in the usual manner. After the chimney or other article a has cooled sufciently the handles 15 are forced apart to first swing the mold-sections 6 out of the mold-sections 1 and 2 and then to swing the latter to their open position to permit the chimney or other article to be removed. It will be seen that by first removing the moldsections 6 the blow-over projections upon the chimney or other article will be freed from the mold, so that its two sections 1 and 2 may be readily swung open.

While we have shown and described the preferred embodiment of our invention, it will be understood that we do not limit ourselves to the precise construction herein set forth, since various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the prineiple or sacrificing any of the advantages of this invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

l. A glass-blowers mold comprising moldsections pivotally secured together, one of said sections being formed with an opening, a removable rnold-section in said opening, a slotted guide-bracket upon the mold-section in which said opening is formed, a lever pivoted upon said bracket, and a bolt connecting said removable mold-section and said lever and A projecting through the slot in said bracket, substantially as described.

2. A mold comprising two mold-sections pivoted together and formed with radially-disposed openings, removable niold-secliions in said openings, slotted brackets upon said pivotedmold-scctions, inline with said openings, hand-levers pivoted upon said lnackets` and bolts extending through said slotted brackets and connecting said hand-levers and said removable mold-sections, substantiall,v as described.

8. A mold comprising two sections pivoted together and provided with a series of radial depressions to forni blow-overs, and an independently-pivoted section connected to each mold-section, substantially as described.

4. A glass-blowers inold comprising main mold-sections pivoted together and provided with radial depressions to forni blow-overs, said sections each having an opening therein, and a mold-section indepcndently pivoted to each of said lnain mold-sections, and provided with depressions, substantiall-v as described.

5. A glass-blowei"s mold comprising main mold-sections pivoted together and provided with radial blow-over depressions, and a-n auxiliary mold-section hinged to each ol the main sections by independent -ioints, substantially as described.

In testimony whereof we have hereunto set our handsin presence of two subscribing witnesscs.

CHAS. N. L. BRUDIYOLI). JOSEPH M. lVOOl). lVitnesses:

G. XV. BnowN, J. A. J AoonsnN. 

